CN102183853A - Touch liquid crystal display screen - Google Patents
Touch liquid crystal display screen Download PDFInfo
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- CN102183853A CN102183853A CN2011101322579A CN201110132257A CN102183853A CN 102183853 A CN102183853 A CN 102183853A CN 2011101322579 A CN2011101322579 A CN 2011101322579A CN 201110132257 A CN201110132257 A CN 201110132257A CN 102183853 A CN102183853 A CN 102183853A
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Abstract
The embodiment of the invention discloses a touch liquid crystal display screen, and relates to the field of a liquid crystal display. The touch liquid crystal display screen can increase the opening rate of pixel, reduces the process difficulty and improves the process yield. The touch liquid crystal display screen comprises an array base plate and a color membrane base plate, wherein the array base plate comprises a plurality of pixel units which are limited by grating lines and data lines, a membrane transistor and a pixel electrode are formed in each pixel unit, the array base plate also comprises a touch circuit unit for positioning by touching, and the touch circuit unit comprises touch transmitting lines and touch sensing lines which are arranged in crisscrossed way, and the touch transmitting lines are the grating lines. The touch liquid crystal display screen disclosed is applied to a voltage sensing type In-Cell-Touch liquid crystal display screen.
Description
Technical field
The present invention relates to field of liquid crystal, relate in particular to a kind of touch LCD display screen.
Background technology
Recently, LCD (Liquid Crystal Display, LCD) technology has had development at full speed, has all obtained great progress from the size of screen to the quality that shows, LCD has characteristics such as volume is little, low in energy consumption, radiationless, has now occupied the leading position in demonstration field, plane.
The touch LCD display screen is with one of input, the incorporate important carrier of outlet terminal.In recent years, along with the appearance of small and exquisite, slim and graceful a series of products such as handheld device, market is to the rush of demand of touch LCD display screen.
As shown in Figure 1, the voltage induced formula touch LCD display screen of prior art adopts a cover to realize that independently the scanning address lines of touch function carries out (comprising touch-control emission line 11 and touch induction lines 12) location of touch point, but, owing to there has been in the dot structure of LCDs a cover to be used for the scanning address lines (comprise horizontal grid line 21 and data line 22) longitudinally of Presentation Function, therefore, when as the grid line 21 of Presentation Function and data line 22 when being staggered in together as the touch-control emission line 11 of touch function and touch induction lines 12, not only reduced aperture ratio of pixels, also can increase simultaneously the technology difficulty of preparation touch LCD display screen, technology is bad accordingly also can increase.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of touch LCD display screen, can increase aperture ratio of pixels, and has reduced technology difficulty, has promoted the technology yield.
A kind of touch LCD display screen, comprise: array base palte and color membrane substrates, described array base palte comprises several pixel cells that limited by grid line and data line, be formed with thin film transistor (TFT) and pixel electrode in each pixel cell, described array base palte also comprises: the touch-control circuit unit that is used to touch the location, described touch-control circuit unit comprises touch-control emission line and touch induction lines intersected with each other, and described touch-control emission line is described grid line.
Described touch-control circuit unit also comprises: first contact and second contact, and described first contact is connected with described grid line, and described second contact is connected with described touch induction lines.
On described color membrane substrates, be provided with the soft-touch control that is used for when pushing, being communicated with described first contact and second contact corresponding to described first contact and place, second contact.
Described soft-touch control is the chock insulator matter with conducting function.
Described touch-control circuit unit is arranged at least one pixel cell.
Described touch-control circuit unit is connected with the touching signals processing unit.
After having scanned a frame picture, described touch induction lines instant earthing, the electric charge release that is accumulated on the described touch induction lines finishes, and current potential makes zero.
In the technical scheme of present embodiment, make grid line realize being used for touching the function of touch-control emission line of the touch-control circuit unit of location, the touch-control emission line that is about to be used for the grid line of Presentation Function and be used for touch function unites two into one, adopt shared scheme, give same sweep signal by IC, when realizing display image, can realize touching the location.This scheme is by adopting the touch-control emission line of grid line as touch function, and the circuit that has reduced in the pixel is arranged density, has increased aperture opening ratio, has also reduced the number of times that technology is carried out simultaneously, has reduced technology difficulty, has improved technologic yield.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of prior art touch LCD display screen;
Fig. 2 is the structural representation of touch LCD display screen in the embodiment of the invention;
Fig. 3 is the structural representation of soft-touch control in the embodiment of the invention;
Fig. 4 is the sequential relationship synoptic diagram one of touch-control circuit unit touch-control addressing in the embodiment of the invention;
Fig. 5 is the sequential relationship synoptic diagram two of touch-control circuit unit touch-control addressing in the embodiment of the invention.
Description of reference numerals:
11-touch-control emission line; The 12-touch induction lines; The 21-grid line;
The 22-data line; The 3-pixel cell; The 4-thin film transistor (TFT);
The 5-soft-touch control.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of touch LCD display screen, can increase aperture ratio of pixels, and has reduced technology difficulty, has promoted the technology yield.
The embodiment of the invention provides a kind of touch LCD display screen, as shown in Figure 2, this touch LCD display screen comprises: array base palte and color membrane substrates, described array base palte comprises several pixel cells 3 that limited by grid line 21 and data line 22, be formed with thin film transistor (TFT) 4 and pixel electrode in each pixel cell 3, described array base palte also comprises: the touch-control circuit unit that is used to touch the location, described touch-control circuit unit comprises touch-control emission line intersected with each other and touch induction lines 12, and described touch-control emission line is described grid line 21.
In technical scheme of the present invention, in order to increase aperture ratio of pixels, also in order to reduce technology difficulty, promote the technology yield, make grid line realize being used for touching the function of touch-control emission line of the touch-control circuit unit of location, the touch-control emission line that is about to be used for the grid line of Presentation Function and be used for touch function unites two into one, adopt shared scheme, give same sweep signal by IC, when realizing display image, can realize touching the location.This scheme is by adopting the touch-control emission line of grid line as touch function, and the circuit that has reduced in the pixel is arranged density, has increased aperture opening ratio, has also reduced the number of times that technology is carried out simultaneously, has reduced technology difficulty, has improved technologic yield.
Further, described touch-control circuit unit also comprises: first contact 13 and second contact 14, and described first contact 13 is connected with described grid line 21, and described second contact 14 is connected 12 with described touch induction lines.
Further, as shown in Figure 3, be provided with the soft-touch control 5 that is used for when pushing, being communicated with described first contact and second contact at first contact and the place, second contact corresponding to the touch-control circuit unit on the described array base palte on the described color membrane substrates.Above the position of touch sensible point, need on color membrane substrates, form a soft-touch control 5, behind touch pressure from the outside, soft-touch control on the color membrane substrates touches two contacts of array base palte, form a loop, like this, the touch induction lines in the touch-control circuit unit can be sensed from the touch-control emission line, be the signal of grid line, can form and touch the addressing positioning function.
Further, described soft-touch control 5 can be for having the chock insulator matter of conducting function.
Further, described touch-control circuit unit can be arranged at least one pixel cell, because the Pixel Dimensions of LCD is smaller usually, and during the human finger touch screen, general contact area all is bigger, and this just shows, there is no need in each pixel cell, all to design a touch-control circuit unit, because the touch-control emission line is shared with grid line, so the touch-control emission line is that each row pixel cell all scans; Touch induction lines then can design a row touch-control sensing circuit according to every plurality of pixels according to the actual needs, can reduce the wiring on the array base palte like this, also can improve the efficient that touching signals is handled.
Below by adopting grid line to specify technical scheme of the present invention as the principle of work that the touch-control emission line carries out the touch-control addressing, Fig. 4 and Fig. 5 have represented the sequential relationship of touch-control circuit unit touch-control addressing, G1, G2, G3......Gn represents the capable scanning gate signal of the n of touch LCD display screen respectively, S1, S2, S3......Sm represent the m row address signal of touch-control circuit unit respectively.
As shown in Figure 4, in the normal demonstration of touch LCD display screen, when promptly not having touch action, grid line carries out periodic scan according to refreshing frequency, touch induction lines is connected to the external signal processing unit, voltage signal to controlling grid scan line after touching signals line and the grid line conducting plays drop-down negative effect, requires touch induction lines to be in vacant state.As shown in Figure 5, when touch action takes place, since the chock insulator matter on the color film as the soft-touch control conducting connect the contact of grid line and touch induction lines respectively, can receive on the touch induction lines from the square-wave signal on the grid line, make the voltage on the touch induction lines raise, after the signal that this sudden change is increased transfers to the external signal processing unit, can determine this occurrence positions of touch action constantly.When on different touch-control sensing circuits, receiving signal respectively,, promptly realized function of multi-spot touch through locating the source, position of these different induced signals after the computing of touching signals processing unit respectively.
Need to prove that the meaning that touch induction lines is in vacant state is the signal that receives only on the touch induction lines from the grid line, itself does not have voltage, like this can be to more responsive from the signal on the grid line.But, when not having touch action on the touch LCD display screen, because touch induction lines is in vacant state all the time, and the existence of stray capacitance is arranged, so can accumulate some electric charges above, this computing for the touching signals processing unit judges it is disadvantageous, therefore, can be behind every scanning one frame, to carrying out the single step of releasing electric treatment on the touch induction lines.Promptly after having scanned a frame picture, touch induction lines is carried out instant earthing handle, make the electric charge release that is accumulated on the touch induction lines finish, current potential makes zero.
In the technical scheme of present embodiment, make grid line realize being used for touching the function of touch-control emission line of the touch-control circuit unit of location, the touch-control emission line that is about to be used for the grid line of Presentation Function and be used for touch function unites two into one, adopt shared scheme, give same sweep signal by IC, when realizing display image, can realize touching the location.This scheme is by adopting the touch-control emission line of grid line as touch function, and the circuit that has reduced in the pixel is arranged density, has increased aperture opening ratio, has also reduced the number of times that technology is carried out simultaneously, has reduced technology difficulty, has improved technologic yield.
Through the above description of the embodiments, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better embodiment under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium that can read, floppy disk as computing machine, hard disk or CD etc., comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (7)
1. touch LCD display screen, comprise: array base palte and color membrane substrates, described array base palte comprises several pixel cells that limited by grid line and data line, be formed with thin film transistor (TFT) and pixel electrode in each pixel cell, it is characterized in that, described array base palte also comprises: be used to touch the touch-control circuit unit of location, described touch-control circuit unit comprises touch-control emission line and touch induction lines intersected with each other, and described touch-control emission line is described grid line.
2. touch LCD display screen according to claim 1 is characterized in that, described touch-control circuit unit also comprises: first contact and second contact, and described first contact is connected with described grid line, and described second contact is connected with described touch induction lines.
3. touch LCD display screen according to claim 2 is characterized in that, is provided with the soft-touch control that is used for being communicated with described first contact and second contact when pushing corresponding to described first contact and place, second contact on described color membrane substrates.
4. touch LCD display screen according to claim 3 is characterized in that, described soft-touch control is a chock insulator matter.
5. according to the described touch LCD display screen of the arbitrary claim of claim 1-4, it is characterized in that described touch-control circuit unit is arranged at least one pixel cell.
6. touch LCD display screen according to claim 5 is characterized in that, described touch-control circuit unit is connected with the touching signals processing unit.
7. touch LCD display screen according to claim 6 is characterized in that, after having scanned a frame picture, and described touch induction lines instant earthing, the electric charge release that is accumulated on the described touch induction lines finishes, and current potential makes zero.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110132257.9A CN102183853B (en) | 2011-05-20 | 2011-05-20 | Touch liquid crystal display screen |
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| CN201110132257.9A CN102183853B (en) | 2011-05-20 | 2011-05-20 | Touch liquid crystal display screen |
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| CN102183853A true CN102183853A (en) | 2011-09-14 |
| CN102183853B CN102183853B (en) | 2015-03-18 |
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| CN201110132257.9A Expired - Fee Related CN102183853B (en) | 2011-05-20 | 2011-05-20 | Touch liquid crystal display screen |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855038A (en) * | 2012-08-17 | 2013-01-02 | 北京京东方光电科技有限公司 | Touch display screen and touch display driving method |
| CN102890379A (en) * | 2012-09-17 | 2013-01-23 | 北京京东方光电科技有限公司 | Pixel unit and thin film transistor liquid crystal display (TFT-LCD) |
| CN103018992A (en) * | 2012-12-27 | 2013-04-03 | 北京京东方光电科技有限公司 | Touch-control liquid crystal display screen and driving method thereof |
| CN103293736A (en) * | 2012-09-05 | 2013-09-11 | 上海天马微电子有限公司 | Embedded liquid crystal touch control panel |
| CN103454800A (en) * | 2013-09-06 | 2013-12-18 | 合肥京东方光电科技有限公司 | Array substrate, touch display panel, display device and circuit driving method |
| CN103699283A (en) * | 2013-12-26 | 2014-04-02 | 合肥京东方光电科技有限公司 | Touch screen, drive method of touch screen, and display device |
| CN103838020A (en) * | 2012-11-22 | 2014-06-04 | 群康科技(深圳)有限公司 | Touch-control display device and method for driving touch-control display device |
| TWI459278B (en) * | 2011-09-28 | 2014-11-01 | Hong Da Liu | Method of transmitting and detecting the touch sensing signal and display device |
| WO2015035723A1 (en) * | 2013-09-13 | 2015-03-19 | 京东方科技集团股份有限公司 | Array substrate and touch display apparatus |
| WO2015096210A1 (en) * | 2013-12-26 | 2015-07-02 | 深圳市华星光电技术有限公司 | Touch liquid crystal display (lcd) array substrate and corresponding touch lcd |
| WO2015096213A1 (en) * | 2013-12-26 | 2015-07-02 | 深圳市华星光电技术有限公司 | Touch liquid crystal display (lcd) array substrate and corresponding touch lcd |
| CN105138179A (en) * | 2015-09-15 | 2015-12-09 | 深圳市华星光电技术有限公司 | Full-in-cell touch screen panel and mobile device |
| WO2016095313A1 (en) * | 2014-12-19 | 2016-06-23 | 深圳市华星光电技术有限公司 | Array substrate and display device |
| CN106842745A (en) * | 2017-02-14 | 2017-06-13 | 京东方科技集团股份有限公司 | A kind of array base palte, display device and its driving method |
| US10121047B2 (en) | 2015-06-26 | 2018-11-06 | Boe Technology Group Co., Ltd. | Fingerprint identification device, touch panel, input device and fingerprint identification method |
| US10209836B2 (en) | 2015-08-13 | 2019-02-19 | Boe Technology Group Co., Ltd. | Array substrate, touch screen and display apparatus containing the same, and method for driving the same |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI459278B (en) * | 2011-09-28 | 2014-11-01 | Hong Da Liu | Method of transmitting and detecting the touch sensing signal and display device |
| CN102855038A (en) * | 2012-08-17 | 2013-01-02 | 北京京东方光电科技有限公司 | Touch display screen and touch display driving method |
| CN102855038B (en) * | 2012-08-17 | 2015-12-16 | 北京京东方光电科技有限公司 | A kind of touch display screen and touch display drive method |
| CN103293736A (en) * | 2012-09-05 | 2013-09-11 | 上海天马微电子有限公司 | Embedded liquid crystal touch control panel |
| CN103293736B (en) * | 2012-09-05 | 2015-12-16 | 上海天马微电子有限公司 | Embedded liquid crystal touch panel |
| CN102890379A (en) * | 2012-09-17 | 2013-01-23 | 北京京东方光电科技有限公司 | Pixel unit and thin film transistor liquid crystal display (TFT-LCD) |
| US9291847B2 (en) | 2012-09-17 | 2016-03-22 | Beijing Boe Optoelectronics Technology Co., Ltd. | Pixel unit and TFT-LCD with touch function |
| CN102890379B (en) * | 2012-09-17 | 2015-03-11 | 北京京东方光电科技有限公司 | Pixel unit and thin film transistor liquid crystal display (TFT-LCD) |
| CN103838020A (en) * | 2012-11-22 | 2014-06-04 | 群康科技(深圳)有限公司 | Touch-control display device and method for driving touch-control display device |
| CN103018992B (en) * | 2012-12-27 | 2015-07-15 | 北京京东方光电科技有限公司 | Touch-control liquid crystal display screen and driving method thereof |
| CN103018992A (en) * | 2012-12-27 | 2013-04-03 | 北京京东方光电科技有限公司 | Touch-control liquid crystal display screen and driving method thereof |
| CN103454800B (en) * | 2013-09-06 | 2017-08-25 | 合肥京东方光电科技有限公司 | Array base palte, touch-control display panel, display device and circuit drive method |
| CN103454800A (en) * | 2013-09-06 | 2013-12-18 | 合肥京东方光电科技有限公司 | Array substrate, touch display panel, display device and circuit driving method |
| WO2015035723A1 (en) * | 2013-09-13 | 2015-03-19 | 京东方科技集团股份有限公司 | Array substrate and touch display apparatus |
| CN103699283A (en) * | 2013-12-26 | 2014-04-02 | 合肥京东方光电科技有限公司 | Touch screen, drive method of touch screen, and display device |
| WO2015096213A1 (en) * | 2013-12-26 | 2015-07-02 | 深圳市华星光电技术有限公司 | Touch liquid crystal display (lcd) array substrate and corresponding touch lcd |
| WO2015096210A1 (en) * | 2013-12-26 | 2015-07-02 | 深圳市华星光电技术有限公司 | Touch liquid crystal display (lcd) array substrate and corresponding touch lcd |
| CN103699283B (en) * | 2013-12-26 | 2018-12-18 | 合肥京东方光电科技有限公司 | Touch screen and its driving method and display device |
| WO2016095313A1 (en) * | 2014-12-19 | 2016-06-23 | 深圳市华星光电技术有限公司 | Array substrate and display device |
| US10121047B2 (en) | 2015-06-26 | 2018-11-06 | Boe Technology Group Co., Ltd. | Fingerprint identification device, touch panel, input device and fingerprint identification method |
| US10209836B2 (en) | 2015-08-13 | 2019-02-19 | Boe Technology Group Co., Ltd. | Array substrate, touch screen and display apparatus containing the same, and method for driving the same |
| CN105138179A (en) * | 2015-09-15 | 2015-12-09 | 深圳市华星光电技术有限公司 | Full-in-cell touch screen panel and mobile device |
| CN105138179B (en) * | 2015-09-15 | 2018-06-15 | 深圳市华星光电技术有限公司 | Full-embedded type touch screen and mobile device |
| CN106842745A (en) * | 2017-02-14 | 2017-06-13 | 京东方科技集团股份有限公司 | A kind of array base palte, display device and its driving method |
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| CN102183853B (en) | 2015-03-18 |
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